BWBNParameterEstimation: Difference between revisions
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The Example file ([http://opensees.berkeley.edu/wiki/images/3/31/BW_pinch.zip BW_pinch.m]) uses Simulink S-Function ([http://opensees.berkeley.edu/wiki/images/9/9b/BWBNpinch.zip BWBNpinch.mdl]) for the pinching parameters estimation. | The Example file ([http://opensees.berkeley.edu/wiki/images/3/31/BW_pinch.zip BW_pinch.m]) uses Simulink S-Function ([http://opensees.berkeley.edu/wiki/images/9/9b/BWBNpinch.zip BWBNpinch.mdl]) for the pinching parameters estimation. | ||
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NOTE: | |||
Parameters required for the non-degrading pinching hysteretic BWBN model can be divided into the following two categories — hysteretic parameters ($alpha, $ko, $n, $gamma, $beta, $Ao) and pinching parameters ($q, $zetas, $p, $Shi, $deltaShi, $lambda). Hysteretic parameters controls the shape of the curve, whilst the pinching parameters define the pinching inducing function h(z). | |||
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TIPS: | |||
Estimates the Parameters in two steps, | |||
1. Set h = 1 in the BWBNpinch.mdl to convert it as a Non-Pinching BoucWen Material. Estimate the hysteretic parameters ($alpha, $ko, $n, $gamma, $beta, $Ao). Set $Ao = 1 as it is a redundant parameter (See References). | |||
2. Find the pinching parameters ($q, $zetas, $p, $Shi, $deltaShi, $lambda) by setting the hysteretic parameters as constant. | |||
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REFERENCES: | REFERENCES: | ||
[http://www.sciencedirect.com/science/article/pii/S0141029613003568 Hossain, M. R., Ashraf, M., & Padgett, J. E. (2013). "Risk-based seismic performance assessment of Yielding Shear Panel Device." Engineering Structures, 56, 1570-1579.] | [http://www.sciencedirect.com/science/article/pii/S0141029613003568 Hossain, M. R., Ashraf, M., & Padgett, J. E. (2013). "Risk-based seismic performance assessment of Yielding Shear Panel Device." Engineering Structures, 56, 1570-1579.] | ||
[http://www.sciencedirect.com/science/article/pii/S0263823112001206 Hossain, M. R., & Ashraf, M. (2012). "Mathematical modelling of yielding shear panel device." Thin-Walled Structures, 59, 153-161.] | |||
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DEVELOPED BY: | DEVELOPED BY: | ||
[http://scholar.google.com.au/citations?user=I_li3qkAAAAJ&hl=en&oi=ao Raquib Hossain], [http://www.uq.edu.au/ The University of Queensland (UQ), Australia] & [http://www.buet.ac.bd/ Bangladesh University of Engineering and Technology (BUET), Bangladesh.] | |||
Latest revision as of 00:29, 23 October 2013
The Example file (BW_pinch.m) uses Simulink S-Function (BWBNpinch.mdl) for the pinching parameters estimation.
NOTE:
Parameters required for the non-degrading pinching hysteretic BWBN model can be divided into the following two categories — hysteretic parameters ($alpha, $ko, $n, $gamma, $beta, $Ao) and pinching parameters ($q, $zetas, $p, $Shi, $deltaShi, $lambda). Hysteretic parameters controls the shape of the curve, whilst the pinching parameters define the pinching inducing function h(z).
TIPS:
Estimates the Parameters in two steps,
1. Set h = 1 in the BWBNpinch.mdl to convert it as a Non-Pinching BoucWen Material. Estimate the hysteretic parameters ($alpha, $ko, $n, $gamma, $beta, $Ao). Set $Ao = 1 as it is a redundant parameter (See References).
2. Find the pinching parameters ($q, $zetas, $p, $Shi, $deltaShi, $lambda) by setting the hysteretic parameters as constant.
REFERENCES:
DEVELOPED BY:
Raquib Hossain, The University of Queensland (UQ), Australia & Bangladesh University of Engineering and Technology (BUET), Bangladesh.